Detailed Test Results

For each of these five data hiding methods, 1096 stego-images are generated from the 1096 CorelDraw images. For each method, now we have 1096 pairs of images, one is the original image, another is the stego-image generated by the data hiding method. Then the 78-D feature vector as defined above is extracted from each of these 1096 pairs of images. The detection rate is reported by averaging over 50 times randomly conducted experiments. We list detailed test results as follows.

1.  Test results for Cox et al.'s spread spectrum (SS) data embedding algorithm.

Test No

Correct Detection Rate of Cover Images

Correct Detection Rate of Stego Images

Correct Detection Rate of All Images

1

0.9727

0.9891

0.9809

2

0.9945

0.9836

0.9891

3

0.9891

0.9727

0.9809

4

0.9945

0.9836

0.9891

5

0.9891

0.9672

0.9781

6

0.9891

0.9781

0.9836

7

0.9508

0.9727

0.9617

8

0.9672

0.9727

0.9699

9

0.9672

0.9727

0.9699

10

0.9891

0.9399

0.9645

11

0.9836

0.9781

0.9809

12

0.9781

0.9891

0.9836

13

0.9563

0.9727

0.9645

14

0.9727

0.9836

0.9781

15

0.9781

0.9781

0.9781

16

0.9836

0.9891

0.9863

17

0.9727

0.9672

0.9699

18

0.9781

0.9617

0.9699

19

0.9727

0.9672

0.9699

20

0.9781

0.9781

0.9781

21

0.9945

0.9672

0.9809

22

0.9727

1.0000

0.9863

23

0.9836

0.9727

0.9781

24

0.9563

0.9781

0.9672

25

0.9781

0.9672

0.9727

26

0.9727

0.9945

0.9836

27

0.9781

0.9836

0.9809

28

0.9945

0.9781

0.9863

29

0.9672

0.9945

0.9809

30

0.9781

0.9727

0.9754

31

0.9727

0.9836

0.9781

32

0.9836

0.9781

0.9809

33

0.9727

0.9672

0.9699

34

0.9672

0.9836

0.9754

35

0.9945

0.9727

0.9836

36

0.9945

0.9836

0.9891

37

0.9727

0.9781

0.9754

38

0.9672

0.9781

0.9727

39

0.9891

0.9727

0.9809

40

0.9891

0.9727

0.9809

41

1.0000

0.9836

0.9918

42

0.9945

0.9781

0.9863

43

0.9891

0.9945

0.9918

44

0.9617

0.9945

0.9781

45

0.9727

0.9617

0.9672

46

0.9781

0.9672

0.9727

47

0.9781

0.9836

0.9809

48

0.9836

0.9617

0.9727

49

0.9891

0.9781

0.9836

50

0.9781

0.9617

0.9699

Average

0.9792

0.9768

0.9780

2.      Test results for Piva et al.'s SS data embedding algorithm.

Test No

Correct Detection Rate of Cover Images

Correct Detection Rate of Stego Images

Correct Detection Rate of All Images

1

0.9945

1.0000

0.9973

2

0.9672

0.9945

0.9809

3

0.9781

0.9945

0.9863

4

0.9836

0.9891

0.9863

5

0.9891

1.0000

0.9945

6

0.9617

0.9891

0.9754

7

0.9891

1.0000

0.9945

8

0.9891

1.0000

0.9945

9

0.9617

0.9891

0.9754

10

0.9836

0.9945

0.9891

11

0.9945

0.9945

0.9945

12

1.0000

0.9945

0.9973

13

0.9836

1.0000

0.9918

14

0.9891

1.0000

0.9945

15

0.9891

0.9945

0.9918

16

0.9891

0.9836

0.9863

17

0.9891

1.0000

0.9945

18

0.9891

0.9891

0.9891

19

0.9891

1.0000

0.9945

20

0.9836

1.0000

0.9918

21

0.9945

1.0000

0.9973

22

0.9945

1.0000

0.9973

23

0.9945

0.9945

0.9945

24

0.9891

0.9945

0.9918

25

0.9891

1.0000

0.9945

26

0.9836

1.0000

0.9918

27

0.9836

1.0000

0.9918

28

0.9617

0.9891

0.9754

29

0.9563

0.9945

0.9754

30

0.9836

1.0000

0.9918

31

0.9727

0.9891

0.9809

32

0.9781

0.9945

0.9863

33

0.9836

0.9945

0.9891

34

0.9891

1.0000

0.9945

35

0.9836

1.0000

0.9918

36

0.9891

0.9945

0.9918

37

0.9836

1.0000

0.9918

38

0.9891

0.9891

0.9891

39

0.9945

1.0000

0.9973

40

0.9836

0.9891

0.9863

41

0.9836

0.9945

0.9891

42

0.9781

0.9891

0.9836

43

1.0000

0.9945

0.9973

44

0.9781

0.9945

0.9863

45

0.9891

0.9945

0.9918

46

0.9727

0.9945

0.9836

47

1.0000

0.9945

0.9973

48

0.9836

1.0000

0.9918

49

0.9672

0.9945

0.9809

50

0.9781

0.9945

0.9863

Average

0.9840

0.9955

0.9898

3.  Test results for Huang and Shi's block SS data embedding algorithm.

Test No

Correct Detection Rate of Cover Images

Correct Detection Rate of Stego Images

Correct Detection Rate of All Images

1

0.9945

0.9945

0.9945

2

0.9781

0.9945

0.9863

3

0.9781

0.9891

0.9836

4

0.9891

0.9945

0.9918

5

0.9836

0.9945

0.9891

6

0.9945

0.9945

0.9945

7

0.9836

1.0000

0.9918

8

0.9836

1.0000

0.9918

9

0.9781

0.9945

0.9863

10

0.9891

0.9891

0.9891

11

0.9891

0.9891

0.9891

12

0.9781

0.9945

0.9863

13

0.9836

0.9945

0.9891

14

0.9945

0.9945

0.9945

15

0.9727

0.9891

0.9809

16

0.9836

0.9945

0.9891

17

0.9891

0.9891

0.9891

18

1.0000

0.9945

0.9973

19

1.0000

0.9945

0.9973

20

0.9891

1.0000

0.9945

21

0.9891

1.0000

0.9945

22

0.9836

0.9836

0.9836

23

0.9563

0.9945

0.9754

24

0.9836

0.9891

0.9863

25

0.9891

1.0000

0.9945

26

0.9836

0.9945

0.9891

27

0.9781

0.9945

0.9863

28

0.9945

1.0000

0.9973

29

0.9836

0.9945

0.9891

30

1.0000

1.0000

1.0000

31

0.9836

0.9891

0.9863

32

0.9836

1.0000

0.9918

33

0.9891

1.0000

0.9945

34

0.9945

0.9891

0.9918

35

1.0000

1.0000

1.0000

36

0.9891

1.0000

0.9945

37

0.9836

0.9836

0.9836

38

0.9781

0.9945

0.9863

39

0.9891

0.9836

0.9863

40

0.9945

0.9945

0.9945

41

0.9891

1.0000

0.9945

42

0.9781

0.9836

0.9809

43

0.9727

0.9945

0.9836

44

0.9836

0.9945

0.9891

45

0.9891

1.0000

0.9945

46

0.9617

0.9891

0.9754

47

0.9781

1.0000

0.9891

48

0.9727

0.9945

0.9836

49

0.9836

0.9945

0.9891

50

0.9945

1.0000

0.9973

Average

0.9852

0.9943

0.9898

4.  Test results for generic LSB data embedding algorithm (0.3 bpp).

Test No

Correct Detection Rate of Cover Images

Correct Detection Rate of Stego Images

Correct Detection Rate of All Images

1

0.9891

0.9945

0.9918

2

0.9781

0.9891

0.9836

3

0.9891

0.9945

0.9918

4

1.0000

0.9945

0.9973

5

0.9945

0.9891

0.9918

6

0.9891

1.0000

0.9945

7

0.9781

0.9945

0.9863

8

0.9781

0.9945

0.9863

9

0.9836

0.9891

0.9863

10

0.9836

1.0000

0.9918

11

0.9945

1.0000

0.9973

12

0.9891

1.0000

0.9945

13

1.0000

0.9891

0.9945

14

0.9836

1.0000

0.9918

15

0.9836

0.9945

0.9891

16

0.9945

0.9781

0.9863

17

0.9945

0.9836

0.9891

18

0.9781

0.9891

0.9836

19

0.9727

0.9945

0.9836

20

0.9781

1.0000

0.9891

21

0.9836

0.9945

0.9891

22

0.9781

0.9891

0.9836

23

0.9836

0.9945

0.9891

24

0.9836

1.0000

0.9918

25

0.9781

1.0000

0.9891

26

0.9891

0.9836

0.9863

27

1.0000

0.9945

0.9973

28

0.9836

0.9945

0.9891

29

1.0000

1.0000

1.0000

30

0.9781

1.0000

0.9891

31

0.9945

0.9945

0.9945

32

0.9945

0.9945

0.9945

33

0.9836

0.9945

0.9891

34

0.9781

0.9945

0.9863

35

0.9891

0.9945

0.9918

36

0.9891

1.0000

0.9945

37

0.9781

1.0000

0.9891

38

0.9891

0.9945

0.9918

39

0.9836

1.0000

0.9918

40

0.9945

1.0000

0.9973

41

0.9727

0.9945

0.9836

42

0.9891

1.0000

0.9945

43

0.9836

1.0000

0.9918

44

0.9727

1.0000

0.9863

45

0.9836

0.9891

0.9863

46

0.9781

0.9945

0.9863

47

0.9945

1.0000

0.9973

48

0.9727

0.9945

0.9836

49

0.9836

0.9945

0.9891

50

0.9891

0.9891

0.9891

Average

0.9857

0.9949

0.9903

5.      Test results for generic QIM data embedding algorithm (0.1 bpp).

Test No

Correct Detection Rate of Cover Images

Correct Detection Rate of Stego Images

Correct Detection Rate of All Images

1

0.9891

1.0000

0.9945

2

0.9836

1.0000

0.9918

3

0.9945

0.9945

0.9945

4

0.9891

0.9891

0.9891

5

0.9945

1.0000

0.9973

6

1.0000

1.0000

1.0000

7

0.9945

1.0000

0.9973

8

0.9781

1.0000

0.9891

9

0.9891

1.0000

0.9945

10

1.0000

0.9891

0.9945

11

0.9836

1.0000

0.9918

12

0.9945

0.9945

0.9945

13

1.0000

1.0000

1.0000

14

0.9945

1.0000

0.9973

15

0.9945

0.9891

0.9918

16

1.0000

0.9891

0.9945

17

0.9836

1.0000

0.9918

18

0.9891

1.0000

0.9945

19

1.0000

0.9945

0.9973

20

0.9945

1.0000

0.9973

21

0.9945

1.0000

0.9973

22

0.9945

0.9945

0.9945

23

1.0000

0.9891

0.9945

24

1.0000

1.0000

1.0000

25

0.9891

1.0000

0.9945

26

0.9836

1.0000

0.9918

27

0.9891

1.0000

0.9945

28

0.9891

0.9891

0.9891

29

0.9781

1.0000

0.9891

30

0.9945

0.9945

0.9945

31

0.9945

0.9945

0.9945

32

1.0000

0.9945

0.9973

33

1.0000

0.9945

0.9973

34

1.0000

0.9891

0.9945

35

1.0000

0.9945

0.9973

36

0.9945

0.9891

0.9918

37

0.9945

1.0000

0.9973

38

1.0000

1.0000

1.0000

39

0.9945

0.9945

0.9945

40

0.9945

0.9945

0.9945

41

0.9836

0.9945

0.9891

42

0.9836

1.0000

0.9918

43

0.9945

1.0000

0.9973

44

0.9891

0.9945

0.9918

45

0.9945

0.9945

0.9945

46

1.0000

1.0000

1.0000

47

0.9891

1.0000

0.9945

48

0.9945

0.9945

0.9945

49

0.9945

0.9891

0.9918

50

0.9836

0.9945

0.9891

Average

0.9928

0.9963

0.9945

6.  Test results for Combining of the previous five data hiding methods.

Test No

Correct Detection Rate of Cover Images

Correct Detection Rate of Stego Images

Correct Detection Rate of All Images

1

0.9399

0.9781

0.9718

2

0.9672

0.9792

0.9772

3

0.9836

0.976

0.9772

4

0.9508

0.9836

0.9781

5

0.9508

0.9825

0.9772

6

0.9235

0.9749

0.9663

7

0.9399

0.9628

0.959

8

0.9727

0.9716

0.9718

9

0.9508

0.9814

0.9763

10

0.9235

0.9727

0.9645

11

0.9617

0.9825

0.9791

12

0.9617

0.9814

0.9781

13

0.9235

0.9803

0.9709

14

0.9617

0.9705

0.969

15

0.9563

0.9683

0.9663

16

0.9399

0.9672

0.9627

17

0.9071

0.9639

0.9545

18

0.9235

0.977

0.9681

19

0.929

0.9705

0.9636

20

0.9508

0.9749

0.9709

21

0.9508

0.9803

0.9754

22

0.9454

0.9814

0.9754

23

0.9071

0.9814

0.969

24

0.9727

0.9749

0.9745

25

0.9563

0.976

0.9727

26

0.9399

0.9749

0.969

27

0.9672

0.9781

0.9763

28

0.9344

0.9902

0.9809

29

0.9563

0.9792

0.9754

30

0.9672

0.9738

0.9727

31

0.9508

0.9814

0.9763

32

0.9508

0.977

0.9727

33

0.9454

0.976

0.9709

34

0.9508

0.965

0.9627

35

0.9454

0.9825

0.9763

36

0.9454

0.9738

0.969

37

0.9071

0.9869

0.9736

38

0.9617

0.9781

0.9754

39

0.9454

0.9716

0.9672

40

0.9508

0.9672

0.9645

41

0.9235

0.9792

0.9699

42

0.9399

0.9825

0.9754

43

0.9344

0.9792

0.9718

44

0.9399

0.9749

0.969

45

0.9672

0.9738

0.9727

46

0.9235

0.9803

0.9709

47

0.9508

0.9814

0.9763

48

0.929

0.9814

0.9727

49

0.9454

0.9836

0.9772

50

0.9617

0.9672

0.9663

Average

0.945682

0.97665

0.971494